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在暴露于数千ppm水平甲苯的四组大鼠尿液中,邻甲酚/对甲酚与马尿酸的比率升高。

Increased o- and p-cresol/hippuric acid ratios in the urine of four strains of rat exposed to toluene at thousands-ppm levels.

作者信息

Inoue O, Seiji K, Ishihara N, Kumai M, Ikeda M

出版信息

Toxicol Lett. 1984 Nov;23(2):249-57. doi: 10.1016/0378-4274(84)90134-6.

DOI:10.1016/0378-4274(84)90134-6
PMID:6506100
Abstract

Rats (Fisher, Wistar, Donryu and Sprague-Dawley strains) were exposed to 5 approximately 3500 ppm toluene for 8 h, and urine samples were analyzed for hippuric acid and cresols. While hippuric acid increased in proportion to the exposure concentration, a sharp increase in o-cresol excretion was observed at high toluene concentrations so that the o-cresol/hippuric acid ratio was elevated after 500 approximately 3500 ppm exposures. Changes in the p-cresol: hippuric acid ratio were less marked. There were strain differences in toluene metabolism. Fisher rats were highest and Sprague-Dawley rats lowest in o-cresol excretion and in the o-cresol: hippuric acid ratio, whereas Wistar rats excreted p-cresol most abundantly.

摘要

将大鼠(费希尔、威斯塔、唐育和斯普拉格-道利品系)暴露于约3500 ppm的甲苯中5次,每次8小时,然后分析尿液样本中的马尿酸和甲酚。虽然马尿酸的增加与暴露浓度成比例,但在高甲苯浓度下观察到邻甲酚排泄量急剧增加,因此在500至约3500 ppm暴露后,邻甲酚/马尿酸比值升高。对甲酚:马尿酸比值的变化不太明显。甲苯代谢存在品系差异。费希尔大鼠的邻甲酚排泄量和邻甲酚:马尿酸比值最高,斯普拉格-道利大鼠最低,而威斯塔大鼠排泄对甲酚最为丰富。

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Increased o- and p-cresol/hippuric acid ratios in the urine of four strains of rat exposed to toluene at thousands-ppm levels.在暴露于数千ppm水平甲苯的四组大鼠尿液中,邻甲酚/对甲酚与马尿酸的比率升高。
Toxicol Lett. 1984 Nov;23(2):249-57. doi: 10.1016/0378-4274(84)90134-6.
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Benzylmercapturic acid is superior to hippuric acid and o-cresol as a urinary marker of occupational exposure to toluene.作为职业性接触甲苯的尿液标志物,苄基硫醚氨酸优于马尿酸和邻甲酚。
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Hippuric acid and ortho-cresol as biological indicators of occupational exposure to toluene.马尿酸和邻甲酚作为职业性接触甲苯的生物指标。
Am J Ind Med. 1987;11(5):529-37. doi: 10.1002/ajim.4700110506.

引用本文的文献

1
Strain difference in free p-cresol excretion in urine of rats exposed to toluene at sub-narcotic concentrations.
Bull Environ Contam Toxicol. 1989 Jul;43(1):74-9. doi: 10.1007/BF01702240.